There are two main ways to replace a window. A retrofit, or insert, sets the new window inside the old frame. A full-frame job takes the old window out down to the framing. In Fresno's stucco homes, which one you choose decides whether the stucco gets cut.
Every dollar figure on this page is a national figure from the publisher named next to it. None of them is a quote from us, and none is a Fresno or California figure. The publishers disagree, sometimes by a lot, so each one is shown on its own instead of being mixed into one range. Fresno jobs also have to meet California's Title 24 energy rules, and local labor, the frame, the glass and the condition of each opening move the price. Figures read in October 2026.
What is the difference between retrofit and full-frame replacement?
A retrofit window fits inside or over the old frame, and a full-frame window replaces the whole unit down to the rough opening. Retrofit is faster, costs less and leaves the stucco and the inside trim alone. Full-frame costs more but lets the installer see and fix the framing and flashing. HomeAdvisor gives retrofit labor of $100 to $300 per window and full-frame labor of $150 to $800. Angi and Bob Vila give $100 to $300 for retrofit and $180 to $1,500 for full-frame.
What is full-frame window replacement?
Full-frame replacement removes the old sash, frame and trim, and often a strip of stucco or siding around the window. The new window, usually with a nailing fin, is set in the opening, flashed into the wall and sealed. Then the stucco or siding is patched and the trim replaced. It is the right choice when the old frame is rotted, out of square or leaking.
What is a flush-fin or stucco-fin window?
A flush-fin window, also called a stucco fin or retrofit fin, has a flat flange on the outside that covers the old frame and sits against the stucco. It is made for retrofit jobs on stucco homes, which is why it is so common in Fresno. The old aluminum frame is cut out or left in place, the new window is set, and the fin is sealed to the stucco. No stucco has to be cut.
Will replacing windows crack my stucco?
A retrofit job with a flush fin should not crack the stucco, because the stucco is not cut. A full-frame job cuts the stucco back around the window, and the patch can show as a slightly different color or texture. Old stucco may also have hairline cracks that open a little when the old frame comes out. Ask how the patch will be finished.
What happens if rot or damage is found around the old frame?
If the installer finds rot, termite damage or water damage when the old window comes out, the work should stop long enough to show you. Damaged framing needs repair before the new window goes in, and that is extra work not in a normal quote. Ask in advance how hidden damage will be priced and approved, and get any change in writing.
How are replacement windows measured?
Replacement windows are measured opening by opening, because older homes are rarely square and two windows that look the same can differ. For a retrofit, the installer measures the inside of the old frame at several points and checks for square. For full-frame, the rough opening is measured. Every opening is measured before anything is ordered, since the windows are made to size.
Can you replace old aluminum window frames?
Yes. Old aluminum frames can be cut out for a full-frame job, or left in the wall and covered by a flush-fin retrofit window. Leaving the old frame in place keeps the stucco intact, which is why it is common on Fresno ranch homes. The new window's fin covers the old frame so it does not show from outside.
How are new windows sealed and flashed?
A full-frame window is flashed with tape or building paper that laps over its fin, so water runs out over the stucco instead of behind it. A retrofit window is sealed to the old frame and the stucco with a quality sealant, and the inside gap is filled with low-expansion foam or backer rod and caulk. Weep holes at the bottom must stay open so water can drain.
Want a price for your own windows? We measure every opening, show you the frame and glass options side by side and give you a written quote per window. Call or text (559) 354-1055.